Boots are so important. Except for my first few days on the lace-up leathers before I bought my own boots (second hand), I spent my first year in ankle-high boots. They were really high-tech! They had buckles! And plastic (fiber-glass I think) plates on the sides over the ankles
: . I think I really benefited from learning how to use force distribution on the bottom of the foot instead of torque on the boot top, and having the ability to move my ankle. Much later, after renting too many too-mushy boots, I swung the pendulum completely the other way (think Daron's DH race boots). It would be extremely difficult for a beginner to learn the finer points with stiff boots coming half-way up their shins. Fortunately for me, by the time I got my race-boots, I was into high-speed skiing, so I could bend them most of the time.
Back on topic, though I can't contribute much.
I used to practice one-footed skiing a lot more than I do now. When I had those old Fischer SLs with the slightly abused Marker Twin-cam 46, or when I rented demos with Markers
Being a person of relatively small mass who liked to ski with massive skis at totally inappropriate high speeds through anything, I quite often found myself needing to instantly correct the direction my ski was pointing whilst in mid air, and I didn't have enough mass to get both skis pointed in the right direction (despite my phenomenal explosive power
). The only way I survived was to keep the (new) inside ski off the snow and use the outside one after pivoting it. I don't think the stem Christie is a dead-end move! I also have on too many occasions had to rescue myself by lifting an ill-behaved ski that somehow found itself totally out of line and using the other ski while I convinced the offending ski to behave, sometimes while simultaneously making a direction change.
I don't have any video of my one-footed skiing, just imagine Bode Miller's recovery at the Olympic SG, only with a smaller skier and a stump instead of a flag